Depth-of-field (DOF) is more than a button on the front of a camera; it is a complex mathematical system that interweaves focal length, focusing distance and aperture. Many modern SLR/DSLR lenses no longer have complete or accurate DOF markings. So to aid photographers, this ExpoImaging ExpoAperture2 Depth-of-Field Guide gives shooters a full scale that can effectively be read with a single glance. To use the guide, one needs to select the sensor/film size anywhere from a 2x digital crop factor to 6x6 cm film - then a focal length ranging from 15mm to 135mm. The scale will compensate for the varying film/sensor sizes in relation to the selected aperture. When the parameters are chosen, the guide returns a range of apertures and the corresponding areas that will be rendered in focus for each f-stop. The ExpoAperture2 is compact and easily finds its home in just about any camera bag or pocket. This ExpoAperture2 includes a printed quick-start guide, a storage pouch and a sensor/film format reference chart. This version of the ExpoAperture2 is a two disc kit that includes a standard guide for 15-135mm lenses and a second disc for telephoto focal lengths from 70-600mm.
- Assert better creative control over depth-of-field
- Quickly determine aperture setting, depth of field result, or hyperfocal distance
- Develop an intuitive understanding of depth-of-field relationships with continued use
- Fast and easy to use
- Compensates for a wide variety of sensor formats and film sizes
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